Hydraulic pipe

carbon steelheavy-dutyfor agricultural applications

Basic information

• Model: Hollow Chrome Plated Rod
• Brand: EAST AI
• Material: CK45 medium carbon steel (approx. 0.42–0.50% C)
• Length: customizable, up to 15 m
• ID tolerance: f7 / f8 / g6, etc.
• Surface roughness: Ra ≤ 0.2 µm

Key features

• CK45 medium carbon steel offers high tensile strength with good machinability and weldability for hydraulic and structural components.
• Hollow construction reduces weight while maintaining required rigidity for dynamic assemblies.
• Chrome-plated outer surface increases abrasion resistance, surface hardness and corrosion protection for extended service life.
• Supplied with the internal bore UN-Honed (ID not honed) to allow cost savings when internal finishing is not critical or to permit customer-specific final machining.
• Custom lengths and optional end-machining or threading services available to fit hydraulic cylinder or machine requirements.
• Cost-effective alternative to fully honed rods while preserving core material and plating benefits.

Technical specifications
Material: CK45 medium carbon steel
Outer finish: Chrome plating
Internal bore (ID): Supplied UN-Honed (ID not honed)
Structure: Hollow cylindrical rod
Standard / max length: Customizable, up to 15 m (references may indicate up to 13 m depending on tooling)
Tolerances (OD / Length / Straightness): Specified per customer order
ID tolerances available: f7 / f8 / g6, etc.
Surface roughness: Ra ≤ 0.2 µm
Additional treatments: Anti-rust oil for storage; optional machining services available


Applications

• Hydraulic cylinders for excavators, forklifts, dump trucks, agricultural machines and other mobile equipment.
• Construction and earthmoving machinery: cranes, loaders, bulldozers, telehandlers.
• Industrial automation and machinery: presses, injection moulding machines, lifting units requiring durable chrome-plated rods.
• Agricultural and mining equipment subject to heavy duty cycles.
• General mechanical uses: telescopic booms, structural support rods, pistons and other assemblies.

Production process

• Selection of high-quality CK45 seamless tubes or hollow rods with traceable material certificates.
• Pre-machining: cutting to length, face machining and any required end preparation.
• Heat treatment / normalizing to stabilize microstructure and reduce residual stresses.
• Hollowing/drilling to form internal bore; final honing is omitted for UN-Honed products.
• Controlled chrome plating of outer surface with specified thickness and hardness.
• Dimensional inspections for straightness, roundness and suitability for hydraulic assemblies.
• Surface protection and packaging: anti-rust oil or protective coatings; careful packing to prevent transit corrosion.
• Final inspection and documentation: Mill Test Certificates (MTC), dimensional reports and plating thickness records.

Quality assurance & certifications

• Dimensional controls: straightness, outer diameter (OD), wall thickness, length tolerances.
• Surface and plating checks: chrome thickness, uniformity and adhesion testing.
• Mechanical tests: tensile strength, yield strength and elongation verified via test reports.
• Corrosion and salt spray testing available on request.
• Documentation provided: Mill Test Certificates, material traceability and inspection records; ISO 9001 referenced where applicable.

Ordering information

• Specify outer diameter, wall thickness (for hollow rods), required length and any end-machining or threading.
• Confirm whether inner bore finishing will be performed by the buyer (product supplied without ID honing).
• Indicate required chrome plating thickness and any additional surface treatments (passivation, anti-rust coating, etc.).
• Provide tolerance requirements for straightness, concentricity and other mechanical parameters.
• Custom packaging, cut-to-length and special machining options available; large orders and stock requests supported.

Technical summary

• Commercial name: Hollow Chrome Plated Rod
• Brand: EAST AI
• Material: CK45 medium carbon steel (approx. 0.42–0.50% C)
• Outer finish: Chrome plating
• Internal bore: Supplied UN-Honed (ID not honed)
• Max length: customizable, references up to 15 m
• ID tolerances: f7 / f8 / g6 available
• Surface roughness: Ra ≤ 0.2 µm